/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-

 * vim:expandtab:shiftwidth=2:tabstop=2:cin:

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsLocalHandlerApp.h"

#include "nsIURI.h"

#include "nsIProcess.h"

// XXX why does nsMIMEInfoImpl have a threadsafe nsISupports?  do we need one 

// here too?

NS_IMPL_ISUPPORTS(nsLocalHandlerApp, nsILocalHandlerApp, nsIHandlerApp)

////////////////////////////////////////////////////////////////////////////////

//// nsIHandlerApp

NS_IMETHODIMP nsLocalHandlerApp::GetName(nsAString& aName)

{

  if (mName.IsEmpty() && mExecutable) {

    // Don't want to cache this, just in case someone resets the app

    // without changing the description....

    mExecutable->GetLeafName(aName);

  } else {

    aName.Assign(mName);

  }

  return NS_OK;

}

NS_IMETHODIMP nsLocalHandlerApp::SetName(const nsAString & aName)

{

  mName.Assign(aName);

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::SetDetailedDescription(const nsAString & aDescription)

{

  mDetailedDescription.Assign(aDescription);

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::GetDetailedDescription(nsAString& aDescription)

{

  aDescription.Assign(mDetailedDescription);

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::Equals(nsIHandlerApp *aHandlerApp, bool *_retval)

{

  NS_ENSURE_ARG_POINTER(aHandlerApp);

  *_retval = false;

  // If the handler app isn't a local handler app, then it's not the same app.

  nsCOMPtr <nsILocalHandlerApp> localHandlerApp = do_QueryInterface(aHandlerApp);

  if (!localHandlerApp)

    return NS_OK;

  // If either handler app doesn't have an executable, then they aren't

  // the same app.

  nsCOMPtr<nsIFile> executable;

  nsresult rv = localHandlerApp->GetExecutable(getter_AddRefs(executable));

  if (NS_FAILED(rv))

    return rv;

  // Equality for two empty nsIHandlerApp

  if (!executable && !mExecutable) {

    *_retval = true;

    return NS_OK;

  }

  // At least one is set so they are not equal

  if (!mExecutable || !executable)

    return NS_OK;

  // Check the command line parameter list lengths

  uint32_t len;

  localHandlerApp->GetParameterCount(&len);

  if (mParameters.Length() != len)

    return NS_OK;

  // Check the command line params lists

  for (uint32_t idx = 0; idx < mParameters.Length(); idx++) {

    nsAutoString param;

    if (NS_FAILED(localHandlerApp->GetParameter(idx, param)) ||

        !param.Equals(mParameters[idx]))

      return NS_OK;

  }

  return executable->Equals(mExecutable, _retval);

}

NS_IMETHODIMP

nsLocalHandlerApp::LaunchWithURI(nsIURI *aURI,

                                 nsIInterfaceRequestor *aWindowContext)

{

  // pass the entire URI to the handler.

  nsAutoCString spec;

  aURI->GetAsciiSpec(spec);

  return LaunchWithIProcess(spec);

}

nsresult

nsLocalHandlerApp::LaunchWithIProcess(const nsCString& aArg)

{

  nsresult rv;

  nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID, &rv);

  if (NS_FAILED(rv))

    return rv;

  if (NS_FAILED(rv = process->Init(mExecutable)))

    return rv;

  const char *string = aArg.get();

  return process->Run(false, &string, 1);

}

////////////////////////////////////////////////////////////////////////////////

//// nsILocalHandlerApp

NS_IMETHODIMP

nsLocalHandlerApp::GetExecutable(nsIFile **aExecutable)

{

  NS_IF_ADDREF(*aExecutable = mExecutable);

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::SetExecutable(nsIFile *aExecutable)

{

  mExecutable = aExecutable;

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::GetParameterCount(uint32_t *aParameterCount)

{

  *aParameterCount = mParameters.Length();

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::ClearParameters()

{

  mParameters.Clear();

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::AppendParameter(const nsAString & aParam)

{

  mParameters.AppendElement(aParam);

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::GetParameter(uint32_t parameterIndex, nsAString & _retval)

{

  if (mParameters.Length() <= parameterIndex)

    return NS_ERROR_INVALID_ARG;

  _retval.Assign(mParameters[parameterIndex]);

  return NS_OK;

}

NS_IMETHODIMP

nsLocalHandlerApp::ParameterExists(const nsAString & aParam, bool *_retval)

{

  *_retval = mParameters.Contains(aParam);

  return NS_OK;

}